3444e85b9dff2f89ff9083e9dec707415e894b687a4ebf281038d1063de4109c

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/05/2024, 09:41

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General

Target

2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
Size

74KB
MD5

9c4470fa3a31d90e505f264371252f62
SHA1

484870198c0c3c41aa390bfbbc6a2f9aaf9c4d7b
SHA256

3444e85b9dff2f89ff9083e9dec707415e894b687a4ebf281038d1063de4109c
SHA512

1d72aa75513f7395fda6a5488f9d3f7c36c5bfa844c30a13e7925701210266adb303cb0a5598ef90ed3c8bd5e70089d79f93fd4cf198209eb3c6fa76d9bb9819
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTD0mPT:ZRpAyazIliazTDT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2356	CTS.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
Token: SeDebugPrivilege	2356	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2356	3048	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	28
PID 3048 wrote to memory of 2356	3048	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	28
PID 3048 wrote to memory of 2356	3048	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	28
PID 3048 wrote to memory of 2356	3048	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\WzXTtfEVpEeeqy9.exe

Filesize
74KB

MD5
db015bc05310e1419d08fce36f758a1e

SHA1
82a8f6549888d5d0e9025a1e6d079e10ecfd960d

SHA256
fd38b44b3a0b8dea118a47116b5078331e5ad723f237d4793b32d030652c11db

SHA512
461fabe9b45c36ca2c8588c4d68090e972ec13a482490bfc52d072fb801758ec1d0ca5746089dc3f9661dd6d3f1547802e78d4078f089327a552b04cbe9d7268

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads